Buddhi as intermediary step in cognition.

‘Moreover, the connection of the Self with the buddhi, its limiting adjunct, depends on wrong knowledge, and wrong knowledge cannot cease except through perfect knowledge. Hence, as long as there does no rise the cognition of Brahman being the universal Self, so long the connection of the soul with the buddhi and its other limiting adjuncts does not come to an end. Thus scripture also says, “I know that great person of sun-like lustre beyond the darknes. A man who knows him passes over death; there is no other path to go.” (Sv. U. lll.8)’ —  Br.S.B., ll.iii.30-31.